murray



2 Sheets-Sheet 1.

(No Model.)

, J. B. MURRAY.

Parallel Gage for-Paper Cutters.

7 Patented May 3 1881.

2 Sheets-Sheet 2.

(No Model.)

J. B. MURRAY. Parallel Gage for Paper Gutters.

No. 240,921. Patented May 3,1881.

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umnens. PHOT ilnrrnn STATES ATENT FFICE.

JOHN B. MURRAY, OF BROOKLYN, E. D., ASSIGNOR TO M. NICHOLS JOHNSON, OFNEW YORK, N. Y.

PARALLEL GAGE FOR PAPER-CUTTERS.

SPECIFICATION forming part of Letters Patent No. 240,921, dated May 3,1881.

Application filed September 11, 1890. (No model.)

To all whom it may concern v Be it known that 1, JOHN B. MURRAY, ofBrooklyn, in the State of New York, have invented an Improved ParallelGage for Paper- Cutting Machines, of which the following is aspecification, reference being had to the annexed drawings, in whichFigure 1 is a side elevation of my improved parallel gage. Fig. 2 is aplan view ofthe same.

Fig. 3 is an end view of the same. Fig. 4 is a central vertical sectionthrough my improved parallel gage, showing also the paper-gage, clamp,and knife in section.

My invention relates to an improved parallel 1 gage for use inconnection with paper-cutting machines, for the purpose of cuttingnarrow strips of paper, labels, 850.; and it consists in an improvedcompressible parallel gage composed of an upper and lower plate attachedtogether at each side by diagonal pivoted links, provided with suitablecross-rods and springs for separating the said plates while they remainparallel to each other and without changing their positions lengthwise.

My invention also consists in the special features of the constructionof my improved parallel gage, as hereinafter more fully set forth.

My improved parallel gage is represented in the accompanying drawings,in which A rep- 0 resents my improved parallel gage; p p, the upper andlower plates of the same 5 l l l, 850., the links at each side of thesame 5 G, the sliding paper-gage of a paper-cutting machine; T, thetable O, the paper-clamp, and K the knife.

My improved parallel gage consists of an upper and lower plate, 19 1),connected together by a series of inclined pivoted links at each side,so that the plates, when pressure is applied to them, will approach eachother while 0 remaining parallel.

The links are represented in the accompanying drawings at Z Z Z Z Z Z Zl, and the positions occupied by the plate 19 and the various links whenthe parallel gage is compressed are represented by the dotted lines 19and l in Fig. 1. A similar series of links is placed on each side of theplates, and the two series are connected together by cross-rods c c c co 0 c c 0 0 passing between the plates and joining the ends of thecorresponding links. The rods 0 c, which are placed at the middle of thelength of the plates, are journaled to the upper and lower plates,respectively, by boxes b b riveted to them. The other cross-rods arefree to move lengthwise away from the center 5 when the links expand asthe plates approach each other. The links I, l, l, and l are simplypivoted together at d d, where they cross each other; but the outer twopairs of links on each side are connected together by rods 1' r, whichpass entirely across the parallel gage and afford points of attachmentfor the springs s s, by which the plates 12 p are forced apart. Thecross-rods 0 0' and c c are limited in their inward movement under theaction of the 6 springs s s by pins "it" i i projecting from the innersides of the plates. These pins act as stops to prevent the plates p pfrom being too widely separated by the contraction of the springsss. Asthepara-llel gageis compressed the springs lengthen, and upon theremoval of the pressure they cause the gage to return to its usualcondition, as shown in full lines in Fig. l. The ends of the linksproject slightly beyond the plates, so that the pressure exerted 7 5 onthe parallel gage to compress it acts directly on the links, instead ofon the plates. Thelinks are secured to the cross-rods by riveting up theends of the latter, care being taken to permit the turning of one of thelinks about the rod at each joint. As shown in Fig. 4, the series oflinks on one side of the parallel gage bear against the paper-gage Gr,while the links on the other side afford an even surface, against whichthe paper P is placed.

When the clamp G is brought down to the position shown by dotted lines0, Figs. 1 and 4, it compresses the parallel gage A, the links thereofextending lengthwise without disturbing the position of the paper, andsecures the 0 paper in position upon the table T. The knife K now beingforced down on the paper divides it at the desired distance from thefront side of the parallel gage.

It is evident that by the use of my improved 5 parallel gage strips ofpaper may be cut of any desired width less than that of the clamp 0,while ordinarily the paper cannot be cut of a narrower width than theclamp, because the paper-gage cannot be brought closer to the knife thanthe space occupied by the clamp.

It is evident, also, that my improved parallel gage adapts itself to thethickness of any bundle of paper which it is desired to cut.

In consequence ofthe arrangement by which the links expand each way fromtheir centers, it will be observed that the friction produced betweenthe links and the paper is equal on both sides of the center ofthesystem of links, so that there is no tendency to disturb the position ofthe paper during the operation of compressing the gage before the clampsecures the paper in place.

It is obvious that the plates 1) 1) need not extend each way from thecenter of the link system beyond a sufficient distance to support thestops i t" i.

I hereby disclaim the patent of Bell, No. 219,062, September 2, 1879,for bill-files.

I claim- 1. The herein-described compressible parallel gage forpaper-cutters, consisting of the plates 1) 1), attached together at eachside by diagonal pivoted links and suitable cross-rods, and providedwith one or more springs, s 8, operating to separate the plates p p,substantially as and for the purposes set forth.

2. The combination of the plates 1) 1), provided with inwardly-projecting stops 2' i, a series ofdiagonal pivoted links on each side thereof,connected together by suitable cross-rods, and one or more springs, s.9, attached to the cross-rods and operating by contraction to separatethe plates 1) 12, substantially as and for the purposes specified.

3. The combination of the plates 1) p with a series of diagonal pivotedlinks on each side thereof, the said links being arranged to projectbeyond the plates, substantially as and for the purposes set forth.

4. In a compressible parallel gage for papercutters, the combination ofthe plates 12 with a series of diagonal pivoted links provided withsuitable cross-rods, attached to the said plates at each side thereof atthe center of the series, and arranged to expand lengthwise each wayfrom the center, thereby equalizing the friction between the paperandthe links on each side the center of the latter, as and for the purposesset forth.

JOHN B. MURRAY.

Witnesses:

G130. G. DUDLEY, GHAs. S. DUDLEY.

